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"Roger L. Costello" wrote: > > - How powerful is the correspondence that you can express with > Architectural Forms? Is it essentially limited to renaming and > omission? You can also map elements to attributes and attributes to elements. > - In addition to using Architectural Forms to express correspondences > that are known a priori, could you use them to document mappings that > are discovered "on-the-fly" by modifying a document or DTD after a > mapping is discovered? Yes, you can do this by modifying DTDs. Caveat: In my experience it is seldom the case that a subtype relationship can be "discovered" after the fact. It works for really loose DTDs like HTML and ICADD, but not for more complex/strict DTDs. This is very similar to the situation in software development. It is very rarely the case that you can "adapt" an existing class to a newly discovered supertype without radically changing the class or breaking existing code. > - It appears to be the case that the correspondence between A and B must > be documented in a way that keeps the mapping tightly coupled to either > A or B. Are there any plans to represent the correspondence so that it > is not tightly coupled to either A or B? You could think of this as the distinction between subtyping and transformation. Subtyping is about an inherent relationship that is discovered in advance. Transformation is about imposing a mapping externally, "on the fly." > - Is it a correct interpretation to say that Architectural Forms > represent correspondence by overloading existing language constructs? "Overloading" is a somewhat overloaded term. Let's say "reusing" existing language constructs. > - Given that subtyping and inheritance have been part of the primary XML > "schema" proposals, is it likely that XML Architectural Forms will be > overtaken by advances in the XML schema area? Eventually. In what time frame, I don't know. -- Paul Prescod - ISOGEN Consulting Engineer speaking for only himself http://itrc.uwaterloo.ca/~papresco "The Excursion [Sport Utility Vehicle] is so large that it will come equipped with adjustable pedals to fit smaller drivers and sensor devices that warn the driver when he or she is about to back into a Toyota or some other object." -- Dallas Morning News xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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